公开(公告)号：US20190023010A1

公开(公告)日：2019-01-24

申请号：US16139716

申请日：2018-09-24

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： James A. Feinn ,  Albert Nagao ,  Thomas R. Strand ,  David R. Thomas ,  Erik D. Torniainen ,  Lawrence H. White

IPC: B41J2/14

CPC classification number: B41J2/1433 ,  B41J2/14016 ,  B41J2002/14387 ,  B41J2002/14475 ,  B41J2202/11

Abstract: An Inkjet nozzle includes an aperture with a noncircular opening substantially defined by a polynomial equation. A droplet generator is also described which includes a firing chamber fluidically coupled to a fluid reservoir a heating resistor and a nozzle. The nozzle includes an aperture forming a passage from the firing chamber to the exterior of the droplet generator through a top hat layer. The nozzle is defined by a closed polynomial and has a mathematically smooth and mathematically continuous shape around aperture's perimeter wall, with two protrusions extending into the center of the aperture.

公开(公告)号：US20180290458A1

公开(公告)日：2018-10-11

申请号：US15570634

申请日：2015-07-14

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Alexander Govyadinov ,  Ron Burns ,  Erik D. Torniainen ,  Galen P. Cook ,  David P. Markel ,  Garrard Hume ,  Chris Bakker

IPC: B41J2/175 ,  B41J2/18 ,  B41J2/14

Abstract: A fluid recirculation channel for dispensing a plurality of fluid drop weights includes a number of sub-channels. The sub-channels include at least one pump channel, and a plurality of drop generator channels fluidically coupled to the at least one pump channel. The fluid recirculation channel further includes a number of pump generators incorporated into the at least one pump channel, a number of drop generators incorporated into drop generator channels, and a plurality of nozzles defined within the drop generator channels, the nozzles being at least as numerous as the number of drop generators.

公开(公告)号：US20160228873A1

公开(公告)日：2016-08-11

申请号：US15134300

申请日：2016-04-20

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Alexander Govyadinov ,  Pavel Kornilovich ,  Erik D. Torniainen ,  David P. Markel

IPC: B01L3/00

CPC classification number: B01L3/502715 ,  B01F5/0275 ,  B01F5/10 ,  B01F13/0059 ,  B01L3/50273 ,  B01L3/502738 ,  B01L3/502769 ,  B01L2200/0636 ,  B01L2300/0816 ,  B01L2300/0861 ,  B01L2300/0867 ,  B01L2300/088 ,  B01L2400/0406 ,  B01L2400/0415 ,  B01L2400/043 ,  B01L2400/0433 ,  B01L2400/0439 ,  B01L2400/0442 ,  B01L2400/0478 ,  B01L2400/0633 ,  F01D1/00 ,  F01D3/00

Abstract: A microfluidic mixing device comprises a main channel and a number of secondary channels extending from a portion of the main channel and entering another portion of the main channel. A number of actuators are located in the secondary channels to pump fluids through the secondary channels. A microfluidic mixing system comprises a microfluidic mixing device. The microfluidic mixing device comprises a main fluid mixing channel, a number of main channel actuators to pump fluid through the main fluid mixing channel, a number of secondary channels fluidly coupled to the main fluid mixing channel, and a number of secondary channel actuators to pump fluids through the secondary channels. The microfluidic mixing device also comprises a fluid source, and a control device to provide fluids from the fluid source to the microfluidic mixing device and activate the main channel actuators and secondary channel actuators.

Abstract translation: 微流体混合装置包括主通道和从主通道的一部分延伸并进入主通道的另一部分的多个次通道。 多个致动器位于次级通道中以将流体泵送通过次级通道。 微流体混合系统包括微流体混合装置。 微流体混合装置包括主流体混合通道，多个主通道致动器以泵送通过主流体混合通道的流体，流体耦合到主流体混合通道的多个次通道，以及多个辅助通道致动器以泵送 流体通过次级通道。 微流体混合装置还包括流体源和控制装置，以将流体从流体源提供给微流体混合装置并且激活主通道致动器和次通道致动器。

公开(公告)号：US20240299942A1

公开(公告)日：2024-09-12

申请号：US18573690

申请日：2021-06-30

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Carson Denison ,  Pavel Kornilovich ,  Alexander Govyadinov ,  Erik D. Torniainen ,  Richard W. Seaver ,  Anand Samuel Jebakumar

IPC: B01L3/00

CPC classification number: B01L3/502746 ,  B01L2300/0816 ,  B01L2300/087 ,  B01L2300/0874 ,  B01L2400/086

Abstract: A microfluidic device includes a chamber having a floor, a ceiling, and an inlet. The microfluidic device includes pillars extending from the floor to the ceiling of the chamber. Each pillar has a leading surface or corner, a trailing surface or corner opposite the leading surface or corner, and trailing side surfaces adjoining the trailing surface or corner. Each pillar is oriented along a corresponding ray intersecting the leading surface or corner and the trailing surface or corner. Adjacent pillars have a turn angle between the corresponding rays of the adjacent pillars, and each pillar has a pillar angle between the trailing side surfaces thereof. The turn and pillar angles are based on a fluidic contact angle to promote fluid flow from the inlet throughout the chamber during priming without fluidic pinning.

公开(公告)号：US20240246084A1

公开(公告)日：2024-07-25

申请号：US18559761

申请日：2021-05-10

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Carson Denison ,  Alexander Govyadinov ,  Richard W. Seaver ,  Erik D. Torniainen ,  Pavel Kornilovich ,  Anand Samuel Jebakumar

IPC: B01L7/00

CPC classification number: B01L7/52 ,  B01L2300/1805 ,  B01L2300/1894

Abstract: Apparatuses may be used for nucleic acid amplification. An example apparatus may include an amplification chamber to contain a biochemical reaction associated with amplification of a biologic sample. The biologic sample may include a nucleic acid. The apparatus may also include a heater thermally coupled to the amplification chamber. The apparatus may also include a thermally conductive substrate in contact with the heater and including a liquid coolant passage to pass a liquid coolant through the thermally conductive substrate.

公开(公告)号：US11904312B2

公开(公告)日：2024-02-20

申请号：US16643264

申请日：2017-11-22

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Hilary Ely ,  Adam Higgins ,  Rachel M. White ,  Erik D. Torniainen ,  Tod Woodford ,  Michael W. Cumbie ,  Chien-Hua Chen

IPC: B01L3/00 ,  B81B1/00

CPC classification number: B01L3/502715 ,  B01L3/50273 ,  B01L3/502723 ,  B01L2300/041 ,  B01L2300/048 ,  B01L2300/06 ,  B01L2300/0627 ,  B01L2300/0654 ,  B01L2300/0681 ,  B01L2300/0819 ,  B01L2300/12 ,  B01L2300/18 ,  B01L2400/0406 ,  B81B1/00

Abstract: The present disclosure is drawn to microfluidic devices. A microfluidic device can include a substrate, a lid mounted to the substrate, and a microchip mounted to the substrate. The lid mounted to the substrate can form a discrete microfluidic chamber between structures including an interior surface of the lid and a portion of the substrate. The lid can include an inlet and a vent positioned relative to one another to facilitate loading of fluid to the discrete microfluidic chamber via capillary action. A portion of the microchip can be positioned within the discrete microfluidic chamber.

公开(公告)号：US20210046757A1

公开(公告)日：2021-02-18

申请号：US17070431

申请日：2020-10-14

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Rio Rivas ,  Lawrence H. White ,  Ed Friesen ,  Erik D. Torniainen

IPC: B41J2/14 ,  B41J2/16

Abstract: In some examples, a printhead can include a main printer fluid line, a firing chamber in fluid communication with the main printer fluid line to receive printer fluid from the main printer fluid line, and a resistor positioned in the firing chamber. The resistor can, for example, receive an electronic current to cause the resistor to heat up and eject printer fluid droplets from the printhead. The printhead can further include a photolithographically fabricated check valve positioned in the firing chamber. The check valve can, for example, be openable to allow filling of the firing chamber with printer fluid and closeable to at least partially seal the main printer fluid line from printer fluid blowback caused by the resistor.

公开(公告)号：US20210039391A1

公开(公告)日：2021-02-11

申请号：US16978859

申请日：2018-04-26

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Lawrence H. White ,  Angel L. Morales ,  Erik D. Torniainen

IPC: B41J2/14

Abstract: A fluid ejection unit may include a fluid supply passage, a fluid circulation loop having a first segment extending from the fluid supply passage, a second segment extending from the fluid supply passage and a bend connecting the first segment and the second segment, a fluid ejector along the second segment, the fluid ejector comprising a fluid ejection orifice and a fluid actuator and a fluid bypass spaced from the fluid actuator and in parallel with the bend to connect the first segment and the second segment.

公开(公告)号：US10850511B2

公开(公告)日：2020-12-01

申请号：US16402969

申请日：2019-05-03

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Alexander Govyadinov ,  Tsuyoshi Yamashita ,  Erik D. Torniainen ,  Nicholas McGuinness ,  David P. Markel

IPC: B41J2/14

Abstract: A fluid ejection device includes a fluid slot, a first fluid ejection chamber communicated with the fluid slot and including a first drop ejecting element, a second fluid ejection chamber communicated with the fluid slot and including a second drop ejecting element, a fluid circulation path communicated with the first fluid ejection chamber and the second fluid ejection chamber, and a fluid circulating element within the fluid circulation path.

公开(公告)号：US20190255845A1

公开(公告)日：2019-08-22

申请号：US16402969

申请日：2019-05-03

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Alexander Govyadinov ,  Tsuyoshi Yamashita ,  Erik D. Torniainen ,  Nicholas McGuinness ,  David P. Markel

IPC: B41J2/14

Abstract: A fluid ejection device includes a fluid slot, a first fluid ejection chamber communicated with the fluid slot and including a first drop ejecting element, a second fluid ejection chamber communicated with the fluid slot and including a second drop ejecting element, a fluid circulation path communicated with the first fluid ejection chamber and the second fluid ejection chamber, and a fluid circulating element within the fluid circulation path.